7.8

CVE-2021-47605

vduse: fix memory corruption in vduse_dev_ioctl()

In the Linux kernel, the following vulnerability has been resolved:

vduse: fix memory corruption in vduse_dev_ioctl()

The "config.offset" comes from the user.  There needs to a check to
prevent it being out of bounds.  The "config.offset" and
"dev->config_size" variables are both type u32.  So if the offset if
out of bounds then the "dev->config_size - config.offset" subtraction
results in a very high u32 value.  The out of bounds offset can result
in memory corruption.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.15 < 5.15.11
Linux ≫ Linux Kernel Version5.16 Updaterc1
Linux ≫ Linux Kernel Version5.16 Updaterc2
Linux ≫ Linux Kernel Version5.16 Updaterc3
Linux ≫ Linux Kernel Version5.16 Updaterc4
Linux ≫ Linux Kernel Version5.16 Updaterc5
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.21% 0.115
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://git.kernel.org/stable/c/e6c67560b4341914bec32ec536e931c22062af65
Patch
https://git.kernel.org/stable/c/ff9f9c6e74848170fcb45c8403c80d661484c8c9
Patch